Throttle-valve



R. H. CUY UN.

HRr EL?. VALVE.

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In vento@ 5 c 5 s e n PATENT oEEIoE.

RAY H. CLIFTON, F EAST PERU, IOWA.

THBOTTLE-VALVE.

Specication of Idetters Patent.

Patented July 8, 1919.

Application led September 14, 1916. Serial No. 120,106.

To all whom it may concern:

\ Be it I4known that I, RAY H. CLIFTON, a citizen et' Vthe UnitedStates, residing atEast Pcnu,in the county of Madison, State of Iowa.,have invented certain new and useful yIInproveniente in Throttle-Valves;and I do hereby declare the follovvin to be a full, clear, and exactdescri tion o the invention, such as will enable otliers skilled in theart to which it appertains to make and use the same.

This invention relates to throttle valves, and has particular referenceto throttle valves which are adapted for use for automobile engines.

The invention has for its primary object to provide an improvedthrottlevalve of a type that may be operated to instantaneously cut oil'the gas supply to the engine,

so that driving power of the latter maybe eliminated without throwingout the clutchA or shutting off the ignition switch. It is a well knownpractice amongs automobile drivers to out off the engine'in going downhill 'by cutting ofi' the ignition sivItch or 'throwing out the clutch.Vhen the ignition switch is cut ott, the `clutch, of course, .stillconnects the engine and the drive shaft, so that when coasting down hillthe engine runs idly and acts in a certain measure as a brake. I nfollowing this practice, care must he taken, when the bottom of the hillis reached and the ignition switch is again closed. that the gas whichhas passed through the engine and into the muiiler does not becomeignited, and exploding in the `mutller destroy the latter. My inventionpermitsl the cutting ofi of the motor instantaneously without thenecessity of throwmg out the clutch or cutting off the ignition system,so that the desirable braking action o the engine may be retainedwithout danger ot' destroying the muffler.

My invention contemplates the provision of a. kind of device or throttlevalve which is interposed between the carburetor and the engine. in theintake pipe. rl`hc device, generally speaking, consists of a casing 1n1{vhich is formed a chamber which receives a comparatively thin wideblade-like valve having an opening which, when in position, VregisterswithV the gas passage to admit the gas to pass therethrough and which Inanother position cuts oli the gas passage en- 56 tirely, so that the gasloes not reach the cn-` gine, which is therefore run idly, or elsestops. The device may be so connected as to be operated either b a footpedal or by a hand lever upon tlie steering wheel or steering post.

VW'ith the above objects in view and such other objects which mahereinafter appear, my invention will now e full set forth anddescribed, reference being ha to the acronr panying drawings. f

In the drawings:-

Figure 1 is a part elevational and part sectional view of an automobileShowing the application of my invention thereto,

Fig. 2 is a vertical section through the throttle valve,

Fig. 3 is al section on line 3-3 of Fi 2,

Fig. 4 is a section on line 4-4 of ig. 2,

and

Fig. 5 is a detailed view of the actuating mechanism. w

ings, 1 indicates'a .carbureter and` 2 the intake pipe ofana'utomobileengine. Interposed between the carbureter 1 and the intake 2 is a valvecasing 3 which carries the cover plate 4. Preferably, the easing 3 isbolted to the coupling flange 5 of the carbureter and the cover plate 4is secured by means of the flange 6 of the intake. The opposing faces ofthe cover plate 4 and the casing 3v are recessed to snugly receivetherebetween the valve plate 7. The-lrccess S Within which the valveplate 7 operates is an elongated passage way and slidably receives thevalve plate 7 with a gas tight t. The body or casing 3 and the coverplate 4 are provided with the registering passages 9 which register withthe `intake 2 and the carbureter l, said passages 9 lying in the path ofmovement of the valve plate 7 The valve plate 7 is provided with acircularopening 10 which registers in one position of the valve platewith the passages 9. The casing 3 is provided with a vertical cavity 11which communicates with the recess 8, and provides for the operation ofa stem 12.

The stem 12 is a right angled element, one.

of whose arms 13 is secured to the lower face of the valve platey 7 andhas its other arm projected through an o ening 14 in the end of thecasing 3. A pac ing 15 held in place by a bushing 16 makes a gas tightpassage around the stem 12. t should be noted that the valve plate isfitted within the recess S in such a manner that it prevents the passageof gas from the recess into the cavity Referring more particularly tothe draw- 11. The opening 10 does not come into communication with thecavity 11 at any time.

In Fig. 1, 17 indicates a foot pedal which extends through the footboard of the automobile body and is carried by a bracket 18 secured'tothe lower side of the foot board, or in any other suitable place. Thebracket has two overturned arms through which the shank of the footpedal projects, and surrounding said shank is a coil spring 19 whichbears between one of saidV overturned arms, and a collar 20 adjustablysecured upon thelshank ofthe foot pedal 17. Below the overturned arm ofthe bracket 18, the foot edal is furthermore provided with an adiustablecollar 21 which provides a sto vto the upward movement of the foot pe alupon its return to normal position.

he lower end of the foot pedal connects to a bell crank lever 22 Whoseopposite arm connects to the extended stem 12 of the valve plate 7.

This mechanism between the. foot pedal and-the valye stem is an obviousmechanical expedient and will necessarily be changed where the device isapplied to automobiles,` in which the throttle must be located at otherpoints or where the carburetor is upon the opposite side of the enginefrom the steering Wheel. The operation of the mech-. anism is obvious,but it should be noted that it providesa means for immediatelyv andcompletely cutting oil' the gas supply so that the engine may run idlyWhere circumstances make it desirable, as When the car is coasting dwnhill. By making it possible to cut off the gas supply instead of thesparking mechanism, all danger, of blowing out the muler isobviated,-and it becomes un- ,necessary to change the gears or discon-'nect the clutch when it is desired to slow down quickly. The device issimple and can be applied to cars of any make, either in building, oralready in operation.

What I claim is A throttle valve for the fuel feed conduit of anautomobile engine, including a rela* tively thick late provided with aport transversely therethrough, a relatively thin plate secured to oneside of the first named plate and provided with a port registering withthe port of the first plate, said plates being formed to provide a slideplate channel therebetween, a slide late mounted in said channel andprovi ed with a port adapted t0 register with the portsl of the plates,the thick plate being provided with a recess at one side of its portextending longitudinally in the direction of movement of the slide plateand1 opening int-o the slide plate passage, an actuating stem slidablypassed through one end portion of the thick plate into the recess andhaving its end therein laterally directed and secured to the slide plateand a packing-member surrounding the stem and threaded in the thickplate. In testimony whereof, I aliix my signature, in the presence oftwo Witnesses.

A RAY H. CLIFTON. Witnesses:

R. J. EMnnsoN, L. A. HAMAND.

